摘要
测井传输系统是一种双向传输系统,常用的双工方式为时分双工和频分双工,都不能充分利用传输带宽。介绍了一种数字回音消除技术,可以在一对缆芯上使用相同的频段进行全双工通信,在有限的传输带宽内,大大提高了系统的传输速率。该回音消除技术可用于基于OFDM技术的测井电缆高速数据传输系统,具有实现复杂度低,适合DSP软件实现的优点。
Time division duplex or frequency division duplex is commonly used in two-way trans- mission system, such as logging transmission system, which can＇t make full use of transmission bandwidth. Introduced is a digital echo cancellation technology, which realizes full-duplex com- munication in the same frequency band on a pair of cable core, and greatly improves the system transmission rate with the limited transmission bandwidth. The echo cancellation technology is used in the high speed data transmission system based on OFDM technology, with low complexi- ty and better advantages in DSP software implementation.
出处
《测井技术》
CAS
CSCD
北大核心
2011年第3期281-283,共3页
Well Logging Technology
关键词
测井电缆
高速数据传输
回音消除
带宽
logging cable, high speed data transmission, echo cancellation, bandwidth
